ATE218905T1 - LIGHT DIFFUSER AND PRODUCTION METHOD OF A LIGHT DIFFUSER - Google Patents

LIGHT DIFFUSER AND PRODUCTION METHOD OF A LIGHT DIFFUSER

Info

Publication number
ATE218905T1
ATE218905T1 AT95810174T AT95810174T ATE218905T1 AT E218905 T1 ATE218905 T1 AT E218905T1 AT 95810174 T AT95810174 T AT 95810174T AT 95810174 T AT95810174 T AT 95810174T AT E218905 T1 ATE218905 T1 AT E218905T1
Authority
AT
Austria
Prior art keywords
core
light diffuser
layer
substance
scattering particles
Prior art date
Application number
AT95810174T
Other languages
German (de)
Inventor
Den Bergh Hubert Prof Dr Van
Jerome Mizeret
Original Assignee
Novartis Erfind Verwalt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Novartis Erfind Verwalt Gmbh filed Critical Novartis Erfind Verwalt Gmbh
Application granted granted Critical
Publication of ATE218905T1 publication Critical patent/ATE218905T1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0601—Apparatus for use inside the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/062—Photodynamic therapy, i.e. excitation of an agent
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/241—Light guide terminations
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/245—Removing protective coverings of light guides before coupling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B2018/2255—Optical elements at the distal end of probe tips
    • A61B2018/2261—Optical elements at the distal end of probe tips with scattering, diffusion or dispersion of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
    • G02B6/3624—Fibre head, e.g. fibre probe termination

Abstract

A light diffuser (1) for the radial emission of light, which has been fed into the diffuser in axial direction, comprises an optical waveguide (2), which itself comprises a core (20) and a cladding (21). The core of the waveguide is exposed at an active region (200) at the distal end (201). The exposed active region (200) of the core (20) is optically separated from a substance containing scattering particles. In a preferred embodiment, the core (2) is roughened and is embedded in a first layer (3) of an elastic substance, which has a refreactive index similar to the refractive index of the cladding (21) and which does not contain any scattering particles. This first layer (3) is embedded in at least one further, second layer (4) of an elastic substance comprising the scattering particles (40). This substance is surrounded by the outer tube (5). <IMAGE>
AT95810174T 1994-03-25 1995-03-16 LIGHT DIFFUSER AND PRODUCTION METHOD OF A LIGHT DIFFUSER ATE218905T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810188 1994-03-25

Publications (1)

Publication Number Publication Date
ATE218905T1 true ATE218905T1 (en) 2002-06-15

Family

ID=8218232

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95810174T ATE218905T1 (en) 1994-03-25 1995-03-16 LIGHT DIFFUSER AND PRODUCTION METHOD OF A LIGHT DIFFUSER

Country Status (10)

Country Link
US (2) US5536265A (en)
EP (1) EP0676218B1 (en)
JP (1) JP3477592B2 (en)
AT (1) ATE218905T1 (en)
CA (1) CA2145371C (en)
DE (1) DE69526998T2 (en)
DK (1) DK0676218T3 (en)
ES (1) ES2178663T3 (en)
PT (1) PT676218E (en)
RU (1) RU2144688C1 (en)

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Also Published As

Publication number Publication date
CA2145371A1 (en) 1995-09-26
US5536265A (en) 1996-07-16
RU2144688C1 (en) 2000-01-20
ES2178663T3 (en) 2003-01-01
RU95104321A (en) 1996-11-27
CA2145371C (en) 2007-05-22
DK0676218T3 (en) 2002-10-07
JPH07265449A (en) 1995-10-17
JP3477592B2 (en) 2003-12-10
EP0676218B1 (en) 2002-06-12
EP0676218A1 (en) 1995-10-11
US5695583A (en) 1997-12-09
PT676218E (en) 2002-10-31
DE69526998T2 (en) 2002-12-19
DE69526998D1 (en) 2002-07-18

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